of course they know she will extend if she did that every time before. I crossed the same unofficial 6 month limit and was taken to the back to a very serious looking immigration officier.
I was taken to the back to a table with an immigration officer who started to ask me questions. At that time my Thai girlfriend was pregnant and she was going to give birth the next week. I had my phone full with photos of her being pregnant and he let me in. But told me to not try to get in with a VE again.
I don't understand all the people who say that it is not a problem. It is not about the number of times you arrive. It is about the total length of time you are staying. And you will stay longer than half a year on VE this way. It is much. I would at least get a tourist visa. From what I always understood you can expect problems when trying to stay more than half a year. And that is also my own experience.
It is really useless to take that 20k in cash. If they ask for that it is because they already decided to refuse you entry for whatever reason. If you can show it than they will find another reason. The 20k will not help you at all.
From what I know an emergency passport lets you leave a country to go back to your home country. I am surprised that countries other than your home country let you enter with this passport.
That sounds all interesting. But I know someone who works for a government school, he teaches English, and he has no university degree and English is not his native language. Honestly... His English sucks and he is only allowed to teach to children in the first 2 years.